drivers/net/mac8390.c

   1 /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike)
   2    Ethernet cards on Linux */
   3 /* Based on the former daynaport.c driver, by Alan Cox.  Some code
   4    taken from or inspired by skeleton.c by Donald Becker, acenic.c by
   5    Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker.
   6
   7    This software may be used and distributed according to the terms of
   8    the GNU Public License, incorporated herein by reference.  */
   9
  10 /* 2000-02-28: support added for Dayna and Kinetics cards by
  11    A.G.deWijn@phys.uu.nl */
  12 /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */
  13 /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */
  14 /* 2001-05-15: support for Cabletron ported from old daynaport driver
  15  * and fixed access to Sonic Sys card which masquerades as a Farallon
  16  * by rayk@knightsmanor.org */
  17 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
  18 /* 2003-12-26: Make sure Asante cards always work. */
  19
  20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21
  22 #include <linux/module.h>
  23 #include <linux/kernel.h>
  24 #include <linux/types.h>
  25 #include <linux/fcntl.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/ptrace.h>
  28 #include <linux/ioport.h>
  29 #include <linux/nubus.h>
  30 #include <linux/in.h>
  31 #include <linux/slab.h>
  32 #include <linux/string.h>
  33 #include <linux/errno.h>
  34 #include <linux/init.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/bitops.h>
  39 #include <linux/io.h>
  40
  41 #include <asm/system.h>
  42 #include <asm/dma.h>
  43 #include <asm/hwtest.h>
  44 #include <asm/macints.h>
  45
  46 static char version[] =
  47         "v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
  48
  49 #define EI_SHIFT(x)     (ei_local->reg_offset[x])
  50 #define ei_inb(port)    in_8(port)
  51 #define ei_outb(val, port)      out_8(port, val)
  52 #define ei_inb_p(port)  in_8(port)
  53 #define ei_outb_p(val, port)    out_8(port, val)
  54
  55 #include "lib8390.c"
  56
  57 #define WD_START_PG                     0x00    /* First page of TX buffer */
  58 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  59 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  60 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG
  61                                                 /* First page of TX buffer */
  62
  63 /*
  64  * Unfortunately it seems we have to hardcode these for the moment
  65  * Shouldn't the card know about this?
  66  * Does anyone know where to read it off the card?
  67  * Do we trust the data provided by the card?
  68  */
  69
  70 #define DAYNA_8390_BASE         0x80000
  71 #define DAYNA_8390_MEM          0x00000
  72
  73 #define CABLETRON_8390_BASE     0x90000
  74 #define CABLETRON_8390_MEM      0x00000
  75
  76 #define INTERLAN_8390_BASE      0xE0000
  77 #define INTERLAN_8390_MEM       0xD0000
  78
  79 enum mac8390_type {
  80         MAC8390_NONE = -1,
  81         MAC8390_APPLE,
  82         MAC8390_ASANTE,
  83         MAC8390_FARALLON,
  84         MAC8390_CABLETRON,
  85         MAC8390_DAYNA,
  86         MAC8390_INTERLAN,
  87         MAC8390_KINETICS,
  88 };
  89
  90 static const char *cardname[] = {
  91         "apple",
  92         "asante",
  93         "farallon",
  94         "cabletron",
  95         "dayna",
  96         "interlan",
  97         "kinetics",
  98 };
  99
 100 static const int word16[] = {
 101         1, /* apple */
 102         1, /* asante */
 103         1, /* farallon */
 104         1, /* cabletron */
 105         0, /* dayna */
 106         1, /* interlan */
 107         0, /* kinetics */
 108 };
 109
 110 /* on which cards do we use NuBus resources? */
 111 static const int useresources[] = {
 112         1, /* apple */
 113         1, /* asante */
 114         1, /* farallon */
 115         0, /* cabletron */
 116         0, /* dayna */
 117         0, /* interlan */
 118         0, /* kinetics */
 119 };
 120
 121 enum mac8390_access {
 122         ACCESS_UNKNOWN = 0,
 123         ACCESS_32,
 124         ACCESS_16,
 125 };
 126
 127 extern int mac8390_memtest(struct net_device *dev);
 128 static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev,
 129                            enum mac8390_type type);
 130
 131 static int mac8390_open(struct net_device *dev);
 132 static int mac8390_close(struct net_device *dev);
 133 static void mac8390_no_reset(struct net_device *dev);
 134 static void interlan_reset(struct net_device *dev);
 135
 136 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
 137 static void sane_get_8390_hdr(struct net_device *dev,
 138                               struct e8390_pkt_hdr *hdr, int ring_page);
 139 static void sane_block_input(struct net_device *dev, int count,
 140                              struct sk_buff *skb, int ring_offset);
 141 static void sane_block_output(struct net_device *dev, int count,
 142                               const unsigned char *buf, const int start_page);
 143
 144 /* dayna_memcpy to and from card */
 145 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 146                                 int from, int count);
 147 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 148                               const void *from, int count);
 149
 150 /* Dayna - Dayna/Kinetics use this */
 151 static void dayna_get_8390_hdr(struct net_device *dev,
 152                                struct e8390_pkt_hdr *hdr, int ring_page);
 153 static void dayna_block_input(struct net_device *dev, int count,
 154                               struct sk_buff *skb, int ring_offset);
 155 static void dayna_block_output(struct net_device *dev, int count,
 156                                const unsigned char *buf, int start_page);
 157
 158 #define memcpy_fromio(a, b, c)  memcpy((a), (void *)(b), (c))
 159 #define memcpy_toio(a, b, c)    memcpy((void *)(a), (b), (c))
 160
 161 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 162 static void slow_sane_get_8390_hdr(struct net_device *dev,
 163                                    struct e8390_pkt_hdr *hdr, int ring_page);
 164 static void slow_sane_block_input(struct net_device *dev, int count,
 165                                   struct sk_buff *skb, int ring_offset);
 166 static void slow_sane_block_output(struct net_device *dev, int count,
 167                                    const unsigned char *buf, int start_page);
 168 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 169 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 170
 171 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
 172 {
 173         switch (dev->dr_sw) {
 174         case NUBUS_DRSW_3COM:
 175                 switch (dev->dr_hw) {
 176                 case NUBUS_DRHW_APPLE_SONIC_NB:
 177                 case NUBUS_DRHW_APPLE_SONIC_LC:
 178                 case NUBUS_DRHW_SONNET:
 179                         return MAC8390_NONE;
 180                         break;
 181                 default:
 182                         return MAC8390_APPLE;
 183                         break;
 184                 }
 185                 break;
 186
 187         case NUBUS_DRSW_APPLE:
 188                 switch (dev->dr_hw) {
 189                 case NUBUS_DRHW_ASANTE_LC:
 190                         return MAC8390_NONE;
 191                         break;
 192                 case NUBUS_DRHW_CABLETRON:
 193                         return MAC8390_CABLETRON;
 194                         break;
 195                 default:
 196                         return MAC8390_APPLE;
 197                         break;
 198                 }
 199                 break;
 200
 201         case NUBUS_DRSW_ASANTE:
 202                 return MAC8390_ASANTE;
 203                 break;
 204
 205         case NUBUS_DRSW_TECHWORKS:
 206         case NUBUS_DRSW_DAYNA2:
 207         case NUBUS_DRSW_DAYNA_LC:
 208                 if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 209                         return MAC8390_CABLETRON;
 210                 else
 211                         return MAC8390_APPLE;
 212                 break;
 213
 214         case NUBUS_DRSW_FARALLON:
 215                 return MAC8390_FARALLON;
 216                 break;
 217
 218         case NUBUS_DRSW_KINETICS:
 219                 switch (dev->dr_hw) {
 220                 case NUBUS_DRHW_INTERLAN:
 221                         return MAC8390_INTERLAN;
 222                         break;
 223                 default:
 224                         return MAC8390_KINETICS;
 225                         break;
 226                 }
 227                 break;
 228
 229         case NUBUS_DRSW_DAYNA:
 230                 /*
 231                  * These correspond to Dayna Sonic cards
 232                  * which use the macsonic driver
 233                  */
 234                 if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
 235                     dev->dr_hw == NUBUS_DRHW_INTERLAN)
 236                         return MAC8390_NONE;
 237                 else
 238                         return MAC8390_DAYNA;
 239                 break;
 240         }
 241         return MAC8390_NONE;
 242 }
 243
 244 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
 245 {
 246         unsigned long outdata = 0xA5A0B5B0;
 247         unsigned long indata =  0x00000000;
 248         /* Try writing 32 bits */
 249         memcpy(membase, &outdata, 4);
 250         /* Now compare them */
 251         if (memcmp((char *)&outdata, (char *)membase, 4) == 0)
 252                 return ACCESS_32;
 253         /* Write 16 bit output */
 254         word_memcpy_tocard(membase, &outdata, 4);
 255         /* Now read it back */
 256         word_memcpy_fromcard(&indata, membase, 4);
 257         if (outdata == indata)
 258                 return ACCESS_16;
 259         return ACCESS_UNKNOWN;
 260 }
 261
 262 static int __init mac8390_memsize(unsigned long membase)
 263 {
 264         unsigned long flags;
 265         int i, j;
 266
 267         local_irq_save(flags);
 268         /* Check up to 32K in 4K increments */
 269         for (i = 0; i < 8; i++) {
 270                 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
 271
 272                 /* Unwriteable - we have a fully decoded card and the
 273                    RAM end located */
 274                 if (hwreg_present(m) == 0)
 275                         break;
 276
 277                 /* write a distinctive byte */
 278                 *m = 0xA5A0 | i;
 279                 /* check that we read back what we wrote */
 280                 if (*m != (0xA5A0 | i))
 281                         break;
 282
 283                 /* check for partial decode and wrap */
 284                 for (j = 0; j < i; j++) {
 285                         volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
 286                         if (*p != (0xA5A0 | j))
 287                                 break;
 288                 }
 289         }
 290         local_irq_restore(flags);
 291         /*
 292          * in any case, we stopped once we tried one block too many,
 293          * or once we reached 32K
 294          */
 295         return i * 0x1000;
 296 }
 297
 298 struct net_device * __init mac8390_probe(int unit)
 299 {
 300         struct net_device *dev;
 301         volatile unsigned short *i;
 302         struct nubus_dev *ndev = NULL;
 303         int err = -ENODEV;
 304
 305         struct nubus_dir dir;
 306         struct nubus_dirent ent;
 307         int offset;
 308         static unsigned int slots;
 309
 310         enum mac8390_type cardtype;
 311
 312         /* probably should check for Nubus instead */
 313
 314         if (!MACH_IS_MAC)
 315                 return ERR_PTR(-ENODEV);
 316
 317         dev = ____alloc_ei_netdev(0);
 318         if (!dev)
 319                 return ERR_PTR(-ENOMEM);
 320
 321         if (unit >= 0)
 322                 sprintf(dev->name, "eth%d", unit);
 323
 324         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
 325                                        ndev))) {
 326                 /* Have we seen it already? */
 327                 if (slots & (1<<ndev->board->slot))
 328                         continue;
 329                 slots |= 1<<ndev->board->slot;
 330
 331                 cardtype = mac8390_ident(ndev);
 332                 if (cardtype == MAC8390_NONE)
 333                         continue;
 334
 335                 printk_once(KERN_INFO pr_fmt(version));
 336
 337                 dev->irq = SLOT2IRQ(ndev->board->slot);
 338                 /* This is getting to be a habit */
 339                 dev->base_addr = (ndev->board->slot_addr |
 340                                   ((ndev->board->slot & 0xf) << 20));
 341
 342                 /* Get some Nubus info - we will trust the card's idea
 343                    of where its memory and registers are. */
 344
 345                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 346                         pr_err("%s: Unable to get Nubus functional directory for slot %X!\n",
 347                                dev->name, ndev->board->slot);
 348                         continue;
 349                 }
 350
 351                 /* Get the MAC address */
 352                 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
 353                         pr_info("%s: Couldn't get MAC address!\n", dev->name);
 354                         continue;
 355                 } else {
 356                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 357                 }
 358
 359                 if (useresources[cardtype] == 1) {
 360                         nubus_rewinddir(&dir);
 361                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
 362                                             &ent) == -1) {
 363                                 pr_err("%s: Memory offset resource for slot %X not found!\n",
 364                                        dev->name, ndev->board->slot);
 365                                 continue;
 366                         }
 367                         nubus_get_rsrc_mem(&offset, &ent, 4);
 368                         dev->mem_start = dev->base_addr + offset;
 369                         /* yes, this is how the Apple driver does it */
 370                         dev->base_addr = dev->mem_start + 0x10000;
 371                         nubus_rewinddir(&dir);
 372                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
 373                                             &ent) == -1) {
 374                                 pr_info("%s: Memory length resource for slot %X not found, probing\n",
 375                                         dev->name, ndev->board->slot);
 376                                 offset = mac8390_memsize(dev->mem_start);
 377                                 } else {
 378                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 379                                 }
 380                         dev->mem_end = dev->mem_start + offset;
 381                 } else {
 382                         switch (cardtype) {
 383                         case MAC8390_KINETICS:
 384                         case MAC8390_DAYNA: /* it's the same */
 385                                 dev->base_addr =
 386                                         (int)(ndev->board->slot_addr +
 387                                               DAYNA_8390_BASE);
 388                                 dev->mem_start =
 389                                         (int)(ndev->board->slot_addr +
 390                                               DAYNA_8390_MEM);
 391                                 dev->mem_end =
 392                                         dev->mem_start +
 393                                         mac8390_memsize(dev->mem_start);
 394                                 break;
 395                         case MAC8390_INTERLAN:
 396                                 dev->base_addr =
 397                                         (int)(ndev->board->slot_addr +
 398                                               INTERLAN_8390_BASE);
 399                                 dev->mem_start =
 400                                         (int)(ndev->board->slot_addr +
 401                                               INTERLAN_8390_MEM);
 402                                 dev->mem_end =
 403                                         dev->mem_start +
 404                                         mac8390_memsize(dev->mem_start);
 405                                 break;
 406                         case MAC8390_CABLETRON:
 407                                 dev->base_addr =
 408                                         (int)(ndev->board->slot_addr +
 409                                               CABLETRON_8390_BASE);
 410                                 dev->mem_start =
 411                                         (int)(ndev->board->slot_addr +
 412                                               CABLETRON_8390_MEM);
 413                                 /* The base address is unreadable if 0x00
 414                                  * has been written to the command register
 415                                  * Reset the chip by writing E8390_NODMA +
 416                                  *   E8390_PAGE0 + E8390_STOP just to be
 417                                  *   sure
 418                                  */
 419                                 i = (void *)dev->base_addr;
 420                                 *i = 0x21;
 421                                 dev->mem_end =
 422                                         dev->mem_start +
 423                                         mac8390_memsize(dev->mem_start);
 424                                 break;
 425
 426                         default:
 427                                 pr_err("Card type %s is unsupported, sorry\n",
 428                                        ndev->board->name);
 429                                 continue;
 430                         }
 431                 }
 432
 433                 /* Do the nasty 8390 stuff */
 434                 if (!mac8390_initdev(dev, ndev, cardtype))
 435                         break;
 436         }
 437
 438         if (!ndev)
 439                 goto out;
 440         err = register_netdev(dev);
 441         if (err)
 442                 goto out;
 443         return dev;
 444
 445 out:
 446         free_netdev(dev);
 447         return ERR_PTR(err);
 448 }
 449
 450 #ifdef MODULE
 451 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 452 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 453 MODULE_LICENSE("GPL");
 454
 455 /* overkill, of course */
 456 static struct net_device *dev_mac8390[15];
 457 int init_module(void)
 458 {
 459         int i;
 460         for (i = 0; i < 15; i++) {
 461                 struct net_device *dev = mac8390_probe(-1);
 462                 if (IS_ERR(dev))
 463                         break;
 464                 dev_mac890[i] = dev;
 465         }
 466         if (!i) {
 467                 pr_notice("No useable cards found, driver NOT installed.\n");
 468                 return -ENODEV;
 469         }
 470         return 0;
 471 }
 472
 473 void cleanup_module(void)
 474 {
 475         int i;
 476         for (i = 0; i < 15; i++) {
 477                 struct net_device *dev = dev_mac890[i];
 478                 if (dev) {
 479                         unregister_netdev(dev);
 480                         free_netdev(dev);
 481                 }
 482         }
 483 }
 484
 485 #endif /* MODULE */
 486
 487 static const struct net_device_ops mac8390_netdev_ops = {
 488         .ndo_open               = mac8390_open,
 489         .ndo_stop               = mac8390_close,
 490         .ndo_start_xmit         = __ei_start_xmit,
 491         .ndo_tx_timeout         = __ei_tx_timeout,
 492         .ndo_get_stats          = __ei_get_stats,
 493         .ndo_set_multicast_list = __ei_set_multicast_list,
 494         .ndo_validate_addr      = eth_validate_addr,
 495         .ndo_set_mac_address    = eth_mac_addr,
 496         .ndo_change_mtu         = eth_change_mtu,
 497 #ifdef CONFIG_NET_POLL_CONTROLLER
 498         .ndo_poll_controller    = __ei_poll,
 499 #endif
 500 };
 501
 502 static int __init mac8390_initdev(struct net_device *dev,
 503                                   struct nubus_dev *ndev,
 504                                   enum mac8390_type type)
 505 {
 506         static u32 fwrd4_offsets[16] = {
 507                 0,      4,      8,      12,
 508                 16,     20,     24,     28,
 509                 32,     36,     40,     44,
 510                 48,     52,     56,     60
 511         };
 512         static u32 back4_offsets[16] = {
 513                 60,     56,     52,     48,
 514                 44,     40,     36,     32,
 515                 28,     24,     20,     16,
 516                 12,     8,      4,      0
 517         };
 518         static u32 fwrd2_offsets[16] = {
 519                 0,      2,      4,      6,
 520                 8,     10,     12,     14,
 521                 16,    18,     20,     22,
 522                 24,    26,     28,     30
 523         };
 524
 525         int access_bitmode = 0;
 526
 527         /* Now fill in our stuff */
 528         dev->netdev_ops = &mac8390_netdev_ops;
 529
 530         /* GAR, ei_status is actually a macro even though it looks global */
 531         ei_status.name = cardname[type];
 532         ei_status.word16 = word16[type];
 533
 534         /* Cabletron's TX/RX buffers are backwards */
 535         if (type == MAC8390_CABLETRON) {
 536                 ei_status.tx_start_page = CABLETRON_TX_START_PG;
 537                 ei_status.rx_start_page = CABLETRON_RX_START_PG;
 538                 ei_status.stop_page = CABLETRON_RX_STOP_PG;
 539                 ei_status.rmem_start = dev->mem_start;
 540                 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 541         } else {
 542                 ei_status.tx_start_page = WD_START_PG;
 543                 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 544                 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 545                 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 546                 ei_status.rmem_end = dev->mem_end;
 547         }
 548
 549         /* Fill in model-specific information and functions */
 550         switch (type) {
 551         case MAC8390_FARALLON:
 552         case MAC8390_APPLE:
 553                 switch (mac8390_testio(dev->mem_start)) {
 554                 case ACCESS_UNKNOWN:
 555                         pr_info("Don't know how to access card memory!\n");
 556                         return -ENODEV;
 557                         break;
 558
 559                 case ACCESS_16:
 560                         /* 16 bit card, register map is reversed */
 561                         ei_status.reset_8390 = &mac8390_no_reset;
 562                         ei_status.block_input = &slow_sane_block_input;
 563                         ei_status.block_output = &slow_sane_block_output;
 564                         ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 565                         ei_status.reg_offset = back4_offsets;
 566                         break;
 567
 568                 case ACCESS_32:
 569                         /* 32 bit card, register map is reversed */
 570                         ei_status.reset_8390 = &mac8390_no_reset;
 571                         ei_status.block_input = &sane_block_input;
 572                         ei_status.block_output = &sane_block_output;
 573                         ei_status.get_8390_hdr = &sane_get_8390_hdr;
 574                         ei_status.reg_offset = back4_offsets;
 575                         access_bitmode = 1;
 576                         break;
 577                 }
 578                 break;
 579
 580         case MAC8390_ASANTE:
 581                 /* Some Asante cards pass the 32 bit test
 582                  * but overwrite system memory when run at 32 bit.
 583                  * so we run them all at 16 bit.
 584                  */
 585                 ei_status.reset_8390 = &mac8390_no_reset;
 586                 ei_status.block_input = &slow_sane_block_input;
 587                 ei_status.block_output = &slow_sane_block_output;
 588                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 589                 ei_status.reg_offset = back4_offsets;
 590                 break;
 591
 592         case MAC8390_CABLETRON:
 593                 /* 16 bit card, register map is short forward */
 594                 ei_status.reset_8390 = &mac8390_no_reset;
 595                 ei_status.block_input = &slow_sane_block_input;
 596                 ei_status.block_output = &slow_sane_block_output;
 597                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 598                 ei_status.reg_offset = fwrd2_offsets;
 599                 break;
 600
 601         case MAC8390_DAYNA:
 602         case MAC8390_KINETICS:
 603                 /* 16 bit memory, register map is forward */
 604                 /* dayna and similar */
 605                 ei_status.reset_8390 = &mac8390_no_reset;
 606                 ei_status.block_input = &dayna_block_input;
 607                 ei_status.block_output = &dayna_block_output;
 608                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 609                 ei_status.reg_offset = fwrd4_offsets;
 610                 break;
 611
 612         case MAC8390_INTERLAN:
 613                 /* 16 bit memory, register map is forward */
 614                 ei_status.reset_8390 = &interlan_reset;
 615                 ei_status.block_input = &slow_sane_block_input;
 616                 ei_status.block_output = &slow_sane_block_output;
 617                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 618                 ei_status.reg_offset = fwrd4_offsets;
 619                 break;
 620
 621         default:
 622                 pr_err("Card type %s is unsupported, sorry\n",
 623                        ndev->board->name);
 624                 return -ENODEV;
 625         }
 626
 627         __NS8390_init(dev, 0);
 628
 629         /* Good, done, now spit out some messages */
 630         pr_info("%s: %s in slot %X (type %s)\n",
 631                 dev->name, ndev->board->name, ndev->board->slot,
 632                 cardname[type]);
 633         pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
 634                 dev->dev_addr, dev->irq,
 635                 (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
 636                 dev->mem_start, access_bitmode ? 32 : 16);
 637         return 0;
 638 }
 639
 640 static int mac8390_open(struct net_device *dev)
 641 {
 642         __ei_open(dev);
 643         if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) {
 644                 pr_info("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 645                 return -EAGAIN;
 646         }
 647         return 0;
 648 }
 649
 650 static int mac8390_close(struct net_device *dev)
 651 {
 652         free_irq(dev->irq, dev);
 653         __ei_close(dev);
 654         return 0;
 655 }
 656
 657 static void mac8390_no_reset(struct net_device *dev)
 658 {
 659         ei_status.txing = 0;
 660         if (ei_debug > 1)
 661                 pr_info("reset not supported\n");
 662         return;
 663 }
 664
 665 static void interlan_reset(struct net_device *dev)
 666 {
 667         unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
 668         if (ei_debug > 1)
 669                 pr_info("Need to reset the NS8390 t=%lu...", jiffies);
 670         ei_status.txing = 0;
 671         target[0xC0000] = 0;
 672         if (ei_debug > 1)
 673                 pr_cont("reset complete\n");
 674         return;
 675 }
 676
 677 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 678 /* directly from daynaport.c by Alan Cox */
 679 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
 680                                   int count)
 681 {
 682         volatile unsigned char *ptr;
 683         unsigned char *target = to;
 684         from <<= 1;     /* word, skip overhead */
 685         ptr = (unsigned char *)(dev->mem_start+from);
 686         /* Leading byte? */
 687         if (from & 2) {
 688                 *target++ = ptr[-1];
 689                 ptr += 2;
 690                 count--;
 691         }
 692         while (count >= 2) {
 693                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
 694                 ptr += 4;                       /* skip cruft */
 695                 target += 2;
 696                 count -= 2;
 697         }
 698         /* Trailing byte? */
 699         if (count)
 700                 *target = *ptr;
 701 }
 702
 703 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 704                                 const void *from, int count)
 705 {
 706         volatile unsigned short *ptr;
 707         const unsigned char *src = from;
 708         to <<= 1;       /* word, skip overhead */
 709         ptr = (unsigned short *)(dev->mem_start+to);
 710         /* Leading byte? */
 711         if (to & 2) {           /* avoid a byte write (stomps on other data) */
 712                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
 713                 ptr++;
 714                 count--;
 715         }
 716         while (count >= 2) {
 717                 *ptr++ = *(unsigned short *)src;        /* Copy and */
 718                 ptr++;                  /* skip cruft */
 719                 src += 2;
 720                 count -= 2;
 721         }
 722         /* Trailing byte? */
 723         if (count) {
 724                 /* card doesn't like byte writes */
 725                 *ptr = (*ptr & 0x00FF) | (*src << 8);
 726         }
 727 }
 728
 729 /* sane block input/output */
 730 static void sane_get_8390_hdr(struct net_device *dev,
 731                               struct e8390_pkt_hdr *hdr, int ring_page)
 732 {
 733         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 734         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 735         /* Fix endianness */
 736         hdr->count = swab16(hdr->count);
 737 }
 738
 739 static void sane_block_input(struct net_device *dev, int count,
 740                              struct sk_buff *skb, int ring_offset)
 741 {
 742         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 743         unsigned long xfer_start = xfer_base + dev->mem_start;
 744
 745         if (xfer_start + count > ei_status.rmem_end) {
 746                 /* We must wrap the input move. */
 747                 int semi_count = ei_status.rmem_end - xfer_start;
 748                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base,
 749                               semi_count);
 750                 count -= semi_count;
 751                 memcpy_toio(skb->data + semi_count,
 752                             (char *)ei_status.rmem_start, count);
 753         } else {
 754                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base,
 755                               count);
 756         }
 757 }
 758
 759 static void sane_block_output(struct net_device *dev, int count,
 760                               const unsigned char *buf, int start_page)
 761 {
 762         long shmem = (start_page - WD_START_PG)<<8;
 763
 764         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 765 }
 766
 767 /* dayna block input/output */
 768 static void dayna_get_8390_hdr(struct net_device *dev,
 769                                struct e8390_pkt_hdr *hdr, int ring_page)
 770 {
 771         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 772
 773         dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
 774         /* Fix endianness */
 775         hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
 776 }
 777
 778 static void dayna_block_input(struct net_device *dev, int count,
 779                               struct sk_buff *skb, int ring_offset)
 780 {
 781         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 782         unsigned long xfer_start = xfer_base+dev->mem_start;
 783
 784         /* Note the offset math is done in card memory space which is word
 785            per long onto our space. */
 786
 787         if (xfer_start + count > ei_status.rmem_end) {
 788                 /* We must wrap the input move. */
 789                 int semi_count = ei_status.rmem_end - xfer_start;
 790                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 791                 count -= semi_count;
 792                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 793                                       ei_status.rmem_start - dev->mem_start,
 794                                       count);
 795         } else {
 796                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 797         }
 798 }
 799
 800 static void dayna_block_output(struct net_device *dev, int count,
 801                                const unsigned char *buf,
 802                                int start_page)
 803 {
 804         long shmem = (start_page - WD_START_PG)<<8;
 805
 806         dayna_memcpy_tocard(dev, shmem, buf, count);
 807 }
 808
 809 /* Cabletron block I/O */
 810 static void slow_sane_get_8390_hdr(struct net_device *dev,
 811                                    struct e8390_pkt_hdr *hdr,
 812                                    int ring_page)
 813 {
 814         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 815         word_memcpy_fromcard(hdr, (char *)dev->mem_start + hdr_start, 4);
 816         /* Register endianism - fix here rather than 8390.c */
 817         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 818 }
 819
 820 static void slow_sane_block_input(struct net_device *dev, int count,
 821                                   struct sk_buff *skb, int ring_offset)
 822 {
 823         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 824         unsigned long xfer_start = xfer_base+dev->mem_start;
 825
 826         if (xfer_start + count > ei_status.rmem_end) {
 827                 /* We must wrap the input move. */
 828                 int semi_count = ei_status.rmem_end - xfer_start;
 829                 word_memcpy_fromcard(skb->data,
 830                                      (char *)dev->mem_start + xfer_base,
 831                                      semi_count);
 832                 count -= semi_count;
 833                 word_memcpy_fromcard(skb->data + semi_count,
 834                                      (char *)ei_status.rmem_start, count);
 835         } else {
 836                 word_memcpy_fromcard(skb->data,
 837                                      (char *)dev->mem_start + xfer_base, count);
 838         }
 839 }
 840
 841 static void slow_sane_block_output(struct net_device *dev, int count,
 842                                    const unsigned char *buf, int start_page)
 843 {
 844         long shmem = (start_page - WD_START_PG)<<8;
 845
 846         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 847 }
 848
 849 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 850 {
 851         volatile unsigned short *to = tp;
 852         const unsigned short *from = fp;
 853
 854         count++;
 855         count /= 2;
 856
 857         while (count--)
 858                 *to++ = *from++;
 859 }
 860
 861 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 862 {
 863         unsigned short *to = tp;
 864         const volatile unsigned short *from = fp;
 865
 866         count++;
 867         count /= 2;
 868
 869         while (count--)
 870                 *to++ = *from++;
 871 }
 872
 873